Kash was a regular on the short-lived series She TV (1994), Minor Adjustments (1995-1996), and Style & Substance (1998). Back in Canada, she guest starred on Dan Redican'sPuppets Who Kill, recurred on the series Doc (with Billy Ray Cyrus), and continued to appear on US shows shot in Canada such as Monk and Haven.

Kash played opposite Jim Varney in Ernest Rides Again (as Ron James' wife), followed by Ernest Goes to School and Ernest Goes to Africa. Film credits include Christopher Guest's Waiting for Guffman and A Mighty Wind, Ron Howard'sCinderella Man, Man of the Year (with Robin Williams), and The Love Guru (with Mike Myers). More recently, she played Molly Brown in the 2012 miniseries Titanic (with Toby Jones and James Wilby) and Mrs. Barry in a 2016 Anne of Green Gables (aired on PBS). Her voice has been heard in various Canadian animated series, including several produced by Nelvana.